Photo

An Iranian navy boat fires a missile in a drill in the sea of Oman, on Friday, Dec. 30, 2011. Iran's navy chief has reiterated for a second time in less than a week that his country can easily close the strategic Strait of Hormuz at the mouth of the Persian Gulf, the passageway through which a sixth of the world's oil flows. (AP Photo/IIPA, Ali Mohammadi)
/ AP